Book-binder s clamp



(No Model.) I

R. DOYLE BOOKBI NDER'S CLAMP. I 3 No; 272,864. I Patented Feb.27, 1883. 1

1 Ina/071252.

@WM A UNITED STATES PATENT @rrrcs.

RICHARD DOYLE, OF GRAND RAPIDS, MICHIGAN.

BOOK-BINDERS CLAMP.

SPECIFICATION forming part of Letters Patent No. 272,864, dated February 27, 1883.

Application filed August 14. 1882.

To all whom "it may concern Be it known that I, RICHARD DOYLE, a citizen of the United States of America. residing at Grand Rapids, in the county of Kent and State of lllichigan, have invented certain new and useful Improvementsin Book-BindersFinishing Stands or Clamps; and I do hereby declare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled 1n the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of relerence marked thereon, which form a part of this specification.

My invention relates to a device designed for the use of book-binders; and it consists in certain features hereinafter described and specilically pointed out in the claims.

Figure l is a perspective, Fig. 2 a vertical central section, and Fig. 3 a detail, of a finishing stand or clamp, constructed in accordance with my invention.

Like letters refer tolike partsin all the figures.

A represents a single casting, which comprises in itself several important elements of the stand--viz., the lixed jaw aof the clamp proper, the slotted face-plate a, the supporting-base a the bracket a and the bearing a for the screw F of the clamp. Suitable ribs and brackets, 0. are formed on the casting to give additional strength. B represents a second casting, which comprises means for holding the movablejaw b, the guides b b for the same, and the bearing 0 for the screw of the clamp. If desired, the movable jaw b may be cast integral with the guides, as shown, for instance, in Fig. 3. 0 represents a third casting, whichconstitutes the bearingcof the screw of the clamp. These three castings, with av few simple accessories, constitute a stand which is strong, serviceable, readily applied to any bench or table, and adjustable to adapt it to hold books varying in size from the largest ledger to the smallest pamphlet. A thumbscrew, D, is provided in the bracket a and, with the pointed washer d thereon, renders the stand capable of being reniovably secured to a table or bench. The table E is rendered adjustable in a vertical direction by means of a thumb-screw, e, passing through a slot in the back plate of the table and through the (No model.)

not 0, which is provided with a rib which fits the slot 6 in the face-plate a of the casting A. Cleats (which bear against the edges of the slotted part of face-plate a) may be provided on the back of the back plate, which serve to keep the table level. The table E mar be of wood or'iron, as desired. The movable jaw b is, in this instance, a separate piece tenoned at each end to tit mortises b formed in the inwardly projecting brackets bon the guides 12 b. Ifdesired, thisjaw b maybe cast integral with the guides and faced with wood, as is the fixed jaw a, the facing a being secured by screws passing from the rear through the casting and into the wood. The fixed jaw, as illustrated in Fig. 1, is grooved at its ends for the reception of the guides I) b, and, in consequence of the brackets I), said guides cannot be directly introduced into the grooves, and therefore the parts are put together in the following manner: The casting B is placed diagonally over the tixed jaw a, (see Fig. 3,) so. that said jaw extends from the back end of one ofthe guides to the front end of the other,and when in this position, the casting B is lowered and one of the guides is inserted in the groove at one end of the jaw,and then the other guide is inserted and the casting is swung around until the bearing b is in line with the bearing a. The screw Fis now inserted in its bearing a, the casting C is put upon the screw and secured to the base a by bolts 0. A hand-wheel, G, is secured to the screw F.

The operation of the stand is apparent from its construction. The tableE is secured at such a point that a book, resting on its front edge, will project above the jaws sufficiently to give easy access to its back, and a few turns of the hand-wheel firmly clamps the book in that position, and the workman has the use of both hands in the operations of lettering, guilding,

or otherwise finishing the back of the book.

1 am aware that book-binding machines have heretofore been constructed with bindingclamps which were adapted to clamp a book in substantially the manner described, and do not broadly claim such devices as of my invention.

Haviugdescribed my invention and its operation, what I claim as new, and desire to secure by Letters Patent, is-- IOO 1. In a book-binders clamp, the casting A, at 6 the base a and the bracket a provided comprising the fixed jaw, the slotted facewith the screw D and washer d, with the inplate, the base, and the attaching-bracket, tegral casting B, comprising the guides b I), :5 substantially as shown anddescribed. I provided with the brackets b b and bearing 2. The combination of the casting B, com- 1 If, and with the table E and screw F, subprising the hearing I) and brackets b verstantially as shown and described. tically grooved or mortised at b the movable In testimony whereof I aflix my signature in jaw b,a nd the fixed jaw a, grooved at its ends, presence of two witnesses. substantially as shown and described. RICHARD DOYLE.

1o 8. The combination of the integral casting Vitnesses:

A, comprising the fixed jaw a, grooved at its LIPPMAN RosENFIELD, ends, the bearing (1 the face-plate a, slotted FREDERICK W. SIMONDS. 

